batgrbproduct analysis for trigger=844615

batgrbproduct Analysis for Trigger=844615

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Jun 27 02:31:26 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger844615/GCN5_download_cron
======================================================================

  Trigger: 00844615      Segment: 000

  BAT Trigger Time: 551694098.112   [s; MET]
      Trigger Stop: 551694099.136   [s; MET]
               UTC: 2018-06-26T08:21:16.945520    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 243.567509280255   Dec: 14.7644605261108  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    11.71
     Image Trigger?:     NO
     Rate S/N Ratio:     15.9687194226713  [ if not an image trigger ]
     Image S/N Ratio:    11.71

  Flight Position:   [ source = BAT ]
    RA: 243.567509280255   Dec: 14.7644605261108  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 243.568771521691   Dec: 14.7590701496152  [deg; J2000]  
        { 16h 14m 16.5s , +14d 45' 32.7" }
         +/- 0.79094045388477 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.274470094785407 [arcmin] (formal 1-sigma fit error)
    SNR: 42.5233286680043
 
  Angular difference between Flight and Ground position is 0.331610 arcmin
 
  Partial Coding Fraction: 0.3554688    [ including projection effects ]

  Duration
     T90: 29.9079998731613 +/- 1.36662506760594
        Measured from: -6.47599983215332
                   to: 23.432000041008     [s; relative to TRIGTIME]
     T50: 13.0119998455048 +/- 0.769355503205248
        Measured from: -1.9119998216629
                   to: 11.1000000238419     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -3.69200003147125     
                   to: -2.69200003147125     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -9.50800001621246     
                   to: 25.7000000476837     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.828434   3.409342   1.841950   0.328581
           0.082511   0.081516   0.068214   0.053694 [error]
 Peak      0.118832   0.204224   0.126347   0.023728
           0.014870   0.015845   0.014027   0.009835 [error]

     [ fluence units of on-axis counts / fully illuminated detector ] 

======================================================================
 
=== Fluence/Peak Flux Summary ===
 
              Model    Band1    Band2    Band3    Band4    Band5    Total      
                       15-25    25-50   50-100  100-350   15-150   15-350   keV
Fluence   Power-law 1.10e-06 1.49e-06 1.48e-06 2.66e-06 4.93e-06 6.73e-06   erg/cm2
              Error 6.32e-08 5.03e-08 6.96e-08 2.68e-07 1.66e-07 3.22e-07   erg/cm2
Peak flux Power-law 1.58e+00 1.39e+00 8.37e-01 7.62e-01 4.13e+00 4.57e+00   ph/cm2/s
              Error 2.35e-01 1.38e-01 1.07e-01 1.85e-01 4.09e-01 4.43e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.03e-06 1.53e-06 1.50e-06 1.60e-06 4.80e-06 5.67e-06   erg/cm2
              Error 7.86e-08 5.95e-08 7.38e-08 5.68e-07 1.93e-07 6.05e-07   erg/cm2
Peak flux Cutoff-PL 1.18e+00 1.64e+00 9.44e-01 1.88e-01 3.92e+00 3.95e+00   ph/cm2/s
              Error 2.85e-01 1.86e-01 1.36e-01 1.30e-01 4.21e-01 3.32e-01   ph/cm2/s
 
Fluence        Band 9.72e-07 1.56e-06 1.45e-06 2.17e-06 4.77e-06 6.18e-06   erg/cm2
              Error 8.95e-08 6.69e-08 7.47e-08 3.81e-07 1.86e-07 4.34e-07   erg/cm2
Peak flux      Band 1.18e+00 1.63e+00 9.43e-01 1.89e-01 3.92e+00 3.95e+00   ph/cm2/s
              Error -------- -------- -------- -------- -------- --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.006    0.063    -      -           1.52e-02 5.26e-04   46.500 57
CPL   1.644    0.265      47.9   12.4      2.32e-02 7.22e-03   40.590 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.729    0.154    -      -           3.08e-02 3.16e-03   62.020 57
CPL  -0.021    0.926      55.9    9.2      2.47e-01 3.66e-01   46.530 56
 
Model      : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index   : photon index: E^-{Ph_index} (minus sign is not included in the index)
Ph_90err   : 90% error of the photon index
Epeak      : Epeak in keV
Epeak_90err: 90% error of Epeak
Norm       : normalization at 50 keV in PL model and at 1 keV in CPL model
Nomr_90err : 90% error of the normalization
chi2       : Chi-Squared
dof        : degree of freedom
 
=== T90/T50 calculation in the 50-300 keV band (BATSE band) using 64 ms lc ===
 
T90 in the 50-300 keV band: 27.584000 sec.
T50 in the 50-300 keV band: 12.480000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   35.208   -9.508   25.700
T90    29.908   -6.476   23.432
T50    13.012   -1.912   11.100
Peak    1.000   -3.692   -2.692

Image

Pre-slew 15-350 keV image (Event data; bkg subtracted)

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  243.5688 +14.7591 0.0046   41.4  167.1       5.8847    42.5  TRIG_00844615       
------------------------------------------
 
Foreground time interval of the image:
 -9.508   9.589 (delta_t =  19.097 [sec])
Background time interval of the image:
-188.511  -9.508 (delta_t = 179.003 [sec])

Lightcurves

Notes:

1 s binning

From T0-310 s to T0+310 s
From T100_start - 20 s to T100_end + 30 s
Full time interval

64 ms binning

Full time interval
From T100_start to T100_end
From T0-5 sec to T0+5 sec

16 ms binning

From T100_start-5 s to T100_start+5 s

8 ms binning

From T100_start-3 s to T100_start+3 s

2 ms binning

From T100_start-1 s to T100_start+1 s

SN=5 or 10 sec. binning (whichever binning is satisfied first)

SN=5 or 10 sec. binning (T < 200 sec)

Spectra

Notes:

Time averaged spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   -9.508 sec. to   25.700 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.00597     ( -0.0625337   0.0631701 )
Norm@50keV  : 1.51931E-02    ( -0.000527294   0.000525348 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.50 using 59 PHA bins.
# Reduced chi-squared =         0.8159 for     57 degrees of freedom 
# Null hypothesis probability =   8.382384e-01
 
Photon flux (15-150 keV)    in 35.21 sec: 2.28526 ( -0.0832709  0.08364 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.93482e-06 ( -1.65551e-07  1.65804e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -9.508 sec. to   25.700 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.64365     ( -0.27391   0.256953 )
Epeak [keV] : 47.9147      ( -12.7003 12.0785 )
Norm@50keV  : 2.31883E-02    ( -0.00587459   0.00856753 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.59 using 59 PHA bins.
# Reduced chi-squared =         0.7248 for     56 degrees of freedom 
# Null hypothesis probability =   9.396761e-01
 
Photon flux (15-150 keV)    in 35.21 sec: 2.22330 ( -0.09278  0.09323 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.7956e-06 ( -1.93479e-07  1.92563e-07 ) ergs/cm2
 
Band function
Time interval is from   -9.508 sec. to   25.700 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.10427   ( -0.55516   1.17305 )
beta        : -2.19764    ( -0.194507   0.138159 )
Epeak [keV] : 39.4157      ( -5.79447 8.90997 )
Norm@50keV   : 4.96492E-02    ( -0.0292174   0.289494 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          36.58 using 59 PHA bins.
# Reduced chi-squared =         0.6651 for     55 degrees of freedom 
# Null hypothesis probability =   9.736373e-01
 
Photon flux (15-150 keV)    in 35.21 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.76849e-06 ( -4.76824e-06  -1.85838e-07 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.8112  (  )
R^2/D10^2   : 0.528766  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         232.97 using 59 PHA bins.
# Reduced chi-squared =         4.0871 for     57 degrees of freedom 
# Null hypothesis probability =   3.899838e-23
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.485e-07   3.468e-08
25- 50  1.694e-06   6.320e-08
50-150  1.406e-06   1.055e-07
15-150  3.648e-06   1.259e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 77.2092       (-7.73207      9.13356)
Norm        : 10.5024       (-0.604763     0.648427)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.25 using 59 PHA bins.
# Reduced chi-squared =         0.7764 for     57 degrees of freedom 
# Null hypothesis probability =   8.911790e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.572e-07   4.982e-08
25- 50  1.562e-06   5.458e-08
50-150  2.152e-06   1.470e-07
15-150  4.672e-06   1.620e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.23365        (-0.747012      0.750557)
R1^2/D10^2  : 2.59072        (-0.741928      1.2136)
kT2 [keV]   : 24.5382        (-3.43466      4.92608)
R2^2/D10^2  : 2.14476E-02    (-0.0107407   0.0181722)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.35 using 59 PHA bins.
# Reduced chi-squared =         0.8428 for     55 degrees of freedom 
# Null hypothesis probability =   7.903425e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.721e-07   8.415e-08
25- 50  1.604e-06   1.238e-07
50-150  2.221e-06   3.817e-07
15-150  4.697e-06   4.630e-07

Peak spectrum fit

Power-law model
Time interval is from   -3.692 sec. to   -2.692 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.72939     ( -0.151224   0.155922 )
Norm@50keV  : 3.07783E-02    ( -0.00317597   0.00315186 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.02 using 59 PHA bins.
# Reduced chi-squared =          1.088 for     57 degrees of freedom 
# Null hypothesis probability =   3.019215e-01
 
Photon flux (15-150 keV)    in 1 sec: 4.13060 ( -0.408298  0.408893 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.84362e-07 ( -3.01962e-08  3.03958e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -3.692 sec. to   -2.692 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.12631E-02     ( -1.0227   0.829915 )
Epeak [keV] : 55.9222      ( -7.0037 11.3019 )
Norm@50keV  : 0.247167    ( -0.153374   0.57775 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.53 using 59 PHA bins.
# Reduced chi-squared =         0.8309 for     56 degrees of freedom 
# Null hypothesis probability =   8.123943e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.91782 ( -0.42056  0.42098 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.63164e-07 ( -3.1185e-08  3.1907e-08 ) ergs/cm2
 
Band function
Time interval is from   -3.692 sec. to   -2.692 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 2.15238E-02   ( -0.80796   1.15209 )
beta        : -10.0000    ( 10   1.42109e-14 )
Epeak [keV] : 55.9102      ( -6.77135 11.2841 )
Norm@50keV   : 0.247282    ( -0.153477   0.578752 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.53 using 59 PHA bins.
# Reduced chi-squared =         0.8460 for     55 degrees of freedom 
# Null hypothesis probability =   7.848120e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.91988 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.62989e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 13.2967  (-1.22454  1.35014)
R^2/D10^2   : 0.749398  (-0.226169   0.318286)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.81 using 59 PHA bins.
# Reduced chi-squared =         0.9090 for     57 degrees of freedom 
# Null hypothesis probability =   6.694031e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.808e-08   4.995e-09
25- 50  9.908e-08   1.199e-08
50-150  1.122e-07   2.183e-08
15-150  2.394e-07   2.840e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 118.397       (-33.5125      53.6561)
Norm        : 17.7917       (-2.07966     2.52283)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.08 using 59 PHA bins.
# Reduced chi-squared =         0.9487 for     57 degrees of freedom 
# Null hypothesis probability =   5.854188e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.636e-08   6.340e-09
25- 50  8.275e-08   1.052e-08
50-150  1.467e-07   5.781e-08
15-150  2.758e-07   6.760e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.75078        (-2.76276      99.7918)
R1^2/D10^2  : 135.264        (-127.808      -128.58)
kT2 [keV]   : 14.2389        (-1.79681      90.1854)
R2^2/D10^2  : 0.557934    (-0.55416   0.218204)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.60 using 59 PHA bins.
# Reduced chi-squared =         0.8473 for     55 degrees of freedom 
# Null hypothesis probability =   7.826314e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.831e-08   1.191e-08
25- 50  9.175e-08   1.523e-08
50-150  1.215e-07   2.838e-08
15-150  2.515e-07   4.160e-08
Plot creation:
Wed Jun 27 02:35:21 EDT 2018